Bukkit

• Included support for 1.12
• Improved API slightly - methods are now annotated nullable where valid, exceptions are preferred instead of returning null as before.

This release marks a new system: For those choosing to keep their server up-to-date, the primary download is much smaller and only supports 1.11(.2) and 1.12. For anyone running an older server, either compile the version you want yourself or use the much larger OpenInv-legacy file in the additional downloads section.